The Ultimate Ultrasonic Welding Quiz

Ultrasonic welding is used widely in many industries -- including shoe manufacturing and auto making. How well do you know how this method uses sound to do what high temperatures normally do. Test your knowledge now.

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Question 1 of 20

In what decade was ultrasonic welding first introduced?

1930s

1940s

Ultrasonic welding was first introduced in the 1940s.

1950s

1960s

Question 2 of 20

What materials are most commonly bonded by ultrasonic welding?

metals

plastics

Plastic materials are most commonly and easily bonded together by ultrasonic welding techniques.

textiles

wood

Question 3 of 20

What force creates the heat in ultrasonic welding?

gravity

friction

The sound waves vibrate the materials. The rubbing makes friction that creates the heat.

electricity

magnetism

Question 4 of 20

Which part of an ultrasonic welder delivers the sound waves?

converter

horn

The horn focuses the ultrasound vibrations and delivers them to the materials to be welded.

booster

power supply

Question 5 of 20

How does ultrasonic welding fuse plastic materials together?

Ultrasonic welding does not yet work with plastics.

The heat generated by friction burns the plastics together.

The heat made by friction melts the plastics together.

You must have a "glue" that gets melted to each plastic by the frictional heat.

None of the above

Question 6 of 20

How does New Balance use ultrasonic welding?

It uses ultrasonic welding to bond materials in shoes soles.

It uses ultrasonic welding to bond and emboss materials.

New Balance uses ultrasonic welding to bond materials with a hot melt film and to emboss materials.

It uses ultrasonic welding to color the shoe soles.

The company doesn't use ultrasonic welding.

Question 7 of 20

Is ultrasonic welding a high- or low-temperature process?

Ultrasonic welding is a high temperature process.

Ultrasonic welding is a low temperature process.

Ultrasonic welding is a low temperature process.

Ultrasonic welding uses both low and high temperatures.

Question 8 of 20

What advantages does ultrasonic welding have over traditional welding?

It's fast.

It's cheap.

It's safe.

All of the above.

Ultrasonic welding is fast, cheap and safe.

Question 9 of 20

What does the booster of an ultrasonic welding apparatus do?

It delivers the sound waves to the materials to be welded.

It amplifies the sound waves.

The booster amplifies the sound waves coming from the transducer.

It creates the sound waves.

It holds the materials together.

Question 10 of 20

The sonotrode is another name for which part of an ultrasonic welding maching?

converter

horn

Another name for the horn is the sonotrode. It focuses and delivers the sound waves to the materials to be welded.

power supply

booster

Question 11 of 20

What is the frequency range of sound waves used in ultrasonic welding?

20 - 40 kHz

Most ultrasonic welding machines use frequencies in the range of 20 - 40 kHz.

5 - 10 kHz

50 - 60 Hz

100 - 1000 Hz

Question 12 of 20

How does ultrasonic welding work with metals?

The heat generated by friction burns away oxides and contaminating materials between the two metals.

The heat made by friction burns away oxides and contaminants from the two metal surfaces. The metals can then bond together.

The heat generated by friction burns the metals together.

You must have a "glue" that gets melted to each metal by the frictional heat.

All of the above.

Question 13 of 20

What auto maker has experimented with using ultrasonic welding to make aluminum chassis?

Boeing

Ford Motor Company

Ford Motor Company has explored using ultrasonic welding to make aluminum chassis in cars.

Caterpillar

Alcoa

Question 14 of 20

To make electrical connection, which technique is faster?

Soldering

Ultrasonic welding

Ultrasonic welding is faster than soldering or conventional welding.

Conventional welding

Question 15 of 20

Which technique would you use to bond two steel girders in constructing a building?

ultrasonic welding

conventional welding

Ultrasonic welding can only produce welds of about a millimeter or so. So, it would not be appropriate for steel girders. Conventional welding would be used.